Plate-valve



G. w. WARD-WELL.

PLA TE VALVE. APPLICATION HLED IAN-24. 1920.

Patented Nov; 16, 1920.

GEORGE W. WARDWELL, OF SOUTH ASSIGNMENTS, TO THE N ORW'ALK NORWALK, CONNECTICUT, ASSIGNOR, BY MESNE IRON WORKS, A CORPORATION OF DELAWARE.

PLATE-VALVE.

Specification of Letters Patent.

1,359,006. Patented Nov. 16, 1920.

Application filed January 24, 1920. Serial No. 353,878.

To aZZ w/wm it may concern: The guard plate is practically circular e it known that I, Gnonon lVAiuiwith a central opening 11 and an annular WELL, citizen of the United States, residing groove 12 in its inner face. The outer diamat South Norwalk. in the county of Faireter of the main body of this guard plate is field and State of Connecticut, have. invent 1 same as the outer diameter of the rim ed a new and useful Improvement in Plate- 5 of the seat plate. and extending from the Valves, of which the following is a specificaedge are legs 13. the outer walls of which tion, are formed on arcs of a circle of a size that This invention relates to those valves that will closely tit into the recess in the seat are particularly designed for use in coiinecplate that is surrounded by the rim (3. Pins tion with air compressors, although appli 14 are inserted in holes made partly in the cable to other types of pumping apparatus. inner wall of the recess in the seat plate The object of the invention is to provide and partly in the outer edges of two of the. an efiicientvalve that can be cheaply manulegs of the guard plate for detachably sefactured. readily repaired, and easily assemcuring the seat plate and guard plate tobled without alteration or substitution of gether. which whenassemhled form a. valve casing that is the same on both faces and parts for use either as an inlet valve or discharge valve as required. is adapted to be inserted either way into the The invention resides in a valve which opening in the casing of the apparatus that has an annular seat plate and annular guard is fitted to receive the valve. plate detachably secured together with a fiat In the space between the seat plate and annular valve disk located between the seat guard plate the annular valve plate is loand guard and normally held to the seatcated, and normally pressing the valve plate by a helical spring, the seat and guard beagainst the seating face of the ing soshaped that when secured together a helical spring 16 which is retained in pothe contour is such that they may be insertsition by having one end resting in the aned' into and held in the same opening in a nular groove 12 in the guard plate.

This valve may be located in the opening compressor casing either side up, depending provided tor it, for instance in an air comon whether the structure is to be used as an inlet valve or as a discharge valve. pressor, in the inner wall 17 of the casing In the accompanying drawings Figure 1 with the guard plate on the inside and the shows a central vertical section of a valve that embodies this invention set in a compressor casing for use as an inlet valve. Fig.2 shows a similar view with the valve turned over, as when it is used for a discharge valve. Fig. 3 shows a plan of the annular seat. Fig. 4 shows a section of the seat on the plane indicated by the dotted line H on Fig. 3. Fig. 5 shows a plan of the guard. Fig. 6 shows a section of the guard on the plane indicated by the dotted line seat plate I 1, it the device is to be employed as an inlet valve. or the seat plate on the inside and the guard plate toward the discharge port 19, if the device is to be employed as a a discharge valve. Thus located the device may be secured in place by any suitable on whether the device is to be used as an 6-6 on Fig-5. Fig. 7 shows a plan of the inlet valve or as a discharge valve, and a ca valve plate. Fig. 8 is a section of the valve 21 that is Screwed into the outer wall 22 of the plate. Fig. 9 shows a side View of the valve casing against the cage so as to force the com lete. valve seat tightly into its pocket.

\Vhen the valve seat by suction as T e seat plate 1 is generally annular in form and has shoulders 2 and 3 around the edge facing in one direction and a shoulder 4 around the edge facing in the other direction, these shoulders providing a rim 5 on one face, a rim 6 on the other face and a flange 7 around the outside. In the center of this plate and supported by arms 8 is a seating hub 9.

plate is drawn from the in inlet work. or forced from the seat as in discharge work, the air or other fluid being pumped passes through the central opening in the valve plate also around the edge of the valve plate between the legs of the guard plate. By unscrewing the cap the cage and valve may be readily removed through seat plate is the opening into which the cap is screwed, and when the valve is taken out the pins which hold the parts together may be pushed out and the valve sections readily separated for cleaning, repairs or renewal of any'parts. There are but few parts to this valve and all are cheap to manufacture and easy to assemble. The guard plate acts as a protector, guide and container for the spring and the valve plate which is merely a fiat piece of steel that fits closely against the fiat seating surface of the seat plate.

The invention, claimed is 1-- 1. The combination with the wall of a compressor cylinder having an opening therethrough, of a valve comprising two casing plates, one fitting within the other and secured thereto, said plates when fitted together forming a casing having both faces about its periphery shaped to closely conform to said opening, whereby the valve may be tightly fitted therein with either face outward, one plate having a central port and the other plate having a closed center with encircling ports, a fiat valve disk with a central port located between the plates, and a spring normally holding the valve disk against the plate having the closed center.

2. A compressor intake and discharge valve comprising a circular seat plate with annularly arranged ports and a. flanged edge, a circular guard plate with a central port and flanged edge fitted into the flanged edge of the seat plate, said plates when fitted together presenting substantially the same conformation on both faces about the periphery, a fiat ported valve disk located in the space between the plates, and a spring normally thrusting the valve disk against the seat plate.

3. The combination with the wall of a cylinder having an opening therethrough, of a valve having both faces about its periphery shaped to closely conformitof'sa'id opening, whereby thevalve may be'lfecated therein with either face outward, said valve comprising a recessed seat late, a guard plate fitted in the recess in t e seat plate, a flat valve disk located between the seat plate and guard plate, a spring thrusting between the guard plate and the valve disk, a ported cage engaging the seat plate for retaining the valve in place, and a plug securing sai cage in place.

4. A valve comprising a seat plate, a guard plate fitted to the seat plate and having legs spacing it therefrom, pins detachably fastening the seat plate and guard plate together, a valve disk located between the seat plate and guard plate, and a spring thrusting the valve disk against the seat plate.

5. A compressor intake and discharge valve comprising an annular seat plate with a solid center and ports about the center, a guard plate with a port through its center fitted into said seat plate, said plates when fitted together presenting substantially the same conformation on both faces about the periphery, whereby the valve will closely fit the same opening either side out, a flat valve plate with a central port located between the seat plate and guard plate, and a spring thrusting between the guard plate and valve plate.

6. A valve comprising a seat plate having a closed center and openings about the center, a guard plate having a central perforation fitted to the seat plate, a flat disk located between the plates, and a spring thrusting the disk agalnst the seat plate.

GEORGE W. WARDWELL. 

